ABSTRACTWith remarkable consistency, the history of Jewish migration westward from Eastern Europe has been narrated and analyzed as the outcome of interaction between a familiar triad of forces: first, a population of immigrants whose vibrant religious practice and confrontational politics led to conflict with the pre-existing communal leaders and institutions; second, an acculturated community of established Jews; and, third, a majority population liable to be hostile to both foreigners and Jews. The immigrants’ acculturation is seen to follow from the interventions of reform and philanthropy and a process of change over generations. This essay provides a critical examination of the current orthodoxy by examining the case of Jewish immigration to London in the late nineteenth and early twentieth century. It begins with a consideration of the historiography and historical sources that have given rise to the predominant interpretation. It goes on to excavate patterns, practices, and social relations that suggest a different and new perspective on the history of Jewish integration.